sententiously       
adverb  disapproving uk/senˈten.ʃəs.li/ us/senˈten.ʃəs.li/
 好说教地;说教式地;自以为是地
in a sententious way (= trying to appear wise, intelligent, and important)
  "There are many things to be considered before that question can be answered properly," I said sententiously. “在正确回答这个问题之前,有很多事情需要考虑,”我意味深长地说。 
 These gentlemen deliver their opinions sententiously. 这些先生们以说教的口吻发表了他们的意见。 
 See: sententious
 - More examples
 - "One's got to make the effort," she said sententiously.
 - The Prime Minister observed sententiously that "the loss of life is something that makes us all sad."
 - He declares sententiously that lost riches can be recovered but death is without remedy.